An In-Depth Review of ALEC 480: Senior Capstone in Agricultural & Environmental Sciences Communication (AESC)

This portfolio reviews ALEC 480, the undergraduate senior capstone course for Agricultural and Environmental Sciences Communication (AESC) majors in the Department of Agricultural Leadership, Education, and Communication (ALEC). The goal of ALEC 480 is to provide a culminating experience for AESC majors that incorporates all learning outcomes for the AESC program. During this course, students investigate topics identified by the Institute of Agriculture and Natural Resources (IANR) as critical to the state of Nebraska. Once identified, students then conduct interviews with researchers and Nebraska Extension educators and write, edit, design, and assist in the production of print and multimedia versions of the Strategic Discussions for Nebraska (SDN) student publication. This portfolio reviews the student learning objectives for the course and gauges the student experience to ensure students are prepared for the work industry. Findings indicated that students feel competent in all skills outlined in the student learning objectives for ALEC 480, and by the end of the semester, appreciate the course and workload, along with the real-world experience gained throughout the course. However, students also reported being overwhelmed during the semester, due to the external nature of their senior capstone project and requested a revamp of deadlines and course design

A Hidden Broad-Line Region in the Weak Seyfert 2 Galaxy NGC 788

We have detected a broad H alpha emission line in the polarized flux spectrum of the Seyfert 2 galaxy NGC 788, indicating that it contains an obscured Seyfert 1 nucleus. While such features have been observed in ~15 other Seyfert 2s, this example is unusual because it has a higher fraction of galaxy starlight in its spectrum, a lower average measured polarization, and a significantly lower radio luminosity than other hidden Seyfert 1s discovered to date. This demonstrates that polarized broad-line regions can be detected in relatively weak classical Seyfert 2s, and illustrates why well-defined, reasonably complete spectropolarimetric surveys at H alpha are necessary in order to assess whether or not all Seyfert 2s are obscured Seyfert 1s.Comment: 10 pages using (AASTEX) aaspp4.sty and 4 postscript figures. Publications of the Astronomical Society of the Pacific, Research Notes, in pres

Emulated retinal image capture (ERICA) to test, train and validate processing of retinal images

High resolution retinal imaging systems, such as adaptive optics scanning laser ophthalmoscopes (AOSLO), are increasingly being used for clinical research and fundamental studies in neuroscience. These systems offer unprecedented spatial and temporal resolution of retinal structures in vivo. However, a major challenge is the development of robust and automated methods for processing and analysing these images. We present ERICA (Emulated Retinal Image CApture), a simulation tool that generates realistic synthetic images of the human cone mosaic, mimicking images that would be captured by an AOSLO, with specified image quality and with corresponding ground-truth data. The simulation includes a self-organising mosaic of photoreceptors, the eye movements an observer might make during image capture, and data capture through a real system incorporating diffraction, residual optical aberrations and noise. The retinal photoreceptor mosaics generated by ERICA have a similar packing geometry to human retina, as determined by expert labelling of AOSLO images of real eyes. In the current implementation ERICA outputs convincingly realistic en face images of the cone photoreceptor mosaic but extensions to other imaging modalities and structures are also discussed. These images and associated ground-truth data can be used to develop, test and validate image processing and analysis algorithms or to train and validate machine learning approaches. The use of synthetic images has the advantage that neither access to an imaging system, nor to human participants is necessary for development

Clearing the Smoke: Understanding Organizational Change Communication and Misalignment in High-Risk Contexts

Recent economic turbulence in the United States has resulted in budget cuts for many city-funded organizations, including high-risk organizations such as local fire departments. Budget cuts trigger organizational change and create uncertainty among employees, which is a major concern for high-risk organizations. This dissertation examined internal communication practices used during organizational change in an urban fire department and the influence of organizational structure and culture on communication satisfaction. This robust case study used a multi-method approach including interviews with middle managers (i.e., district majors), and focus groups and channel preference surveys with full-time firefighters from lower level ranks (i.e., firefighters, lieutenants, and captains). Together, the data points provided a robust understanding of how organizational structure and culture influences communication satisfaction during change in a high-risk organization. As this dissertation was most concerned with information dissemination throughout the fire department during times of change, structuration theory provided direction for how to best explain the structure, dissemination, and preference of communication and Schein’s Model of Organization Culture helped to explain organizational culture differences. The framework of communication satisfaction then offered a basis for further understanding of message dissemination and communication processes. Findings suggest the chain of command, use of internal media, rumors, and filtering of information were active influencers on communication satisfaction. Further, findings suggest that a misalignment in the organizational structure and culture resulted in the dissemination of misaligned messages. These misaligned messages frustrated organizational members and therefore influenced levels of communication satisfaction. When organizational members receive contradictory information, they are less likely to be satisfied with overall communication. Therefore, misaligned messages fostered by the communication climate are a structural and cultural barrier to communication satisfaction and can alter trust of leadership and increase the risk for organizational members. These findings are critical to high-risk organizations because misaligned messages increase risk for organizational employees as well as community members

Fair and Square?: An examination of the relationships among classroom justice and relational teaching messages

Students and instructors acknowledge the importance of the instructor–student relationship in the classroom. Despite the importance of the instructor–student interpersonal relationship, there can also be unexpected or undesirable outcomes associated with relational teaching. Using the theoretical framework of leader–member exchange, we explored relational teaching messages to understand how they may relate positively or negatively to student perceptions of classroom justice. Participants (N = 124) completed measures about relational communication strategies (i.e., rapport, confirmation, and affinity-seeking) and classroom justice (i.e., procedural, interactional, and distributive). Results indicate the enjoyable interaction dimension of rapport positively predicted perceptions of all three types of justice. The response to questions dimension of confirmation positively predicted perceptions of procedural and interactional justice

Using a Case Study to Teach Leaders How to Enact Positive Organizational Change

https://digitalcommons.usmalibrary.org/books/1062/thumbnail.jp

Vitamin D An Examination of Physician and Patient Management of Health and Uncertainty

Vitamin D has been a topic of much research interest and controversy, and evidence is mixed concerning its preventive effects and health benefits. The purpose of our study was to explore the decision-making strategies used by both primary care providers and community members surrounding vitamin D in relation to uncertainty management theory. We conducted semistructured interviews with primary care providers (n = 7) and focus groups with community members (n = 89), and transcribed and coded using the constant comparative method. Themes for providers included awareness, uncertainty, patient role, responsibility, skepticism, uncertainty management, and evolving perceptions. Community member focus group themes included uncertainty, information sources, awareness/knowledge, barriers, and patient–provider relationship. Both providers and community members expressed uncertainty about vitamin D but used conflicting strategies to manage uncertainty. Awareness of this disconnect might facilitate improved patient–provider communication

Foreign direct investment and spillovers : gradualism may be better

The definitive version is available at www3.interscience.wiley.comThe standard argument says that in the presence of positive spillovers foreign direct investment should be promoted and subsidized. In contrast, this paper claims that the very existence of spillovers may require temporarily restricting FDI. Our argument is based on two features of spillovers: they are limited by the economy's absorptive capacity and they take time to materialize. By letting in capital more gradually, initial investment has the time to create spillovers – and upgrade the economy's absorptive capacity – before further investment occurs. The economy converges to a steady state with a superior technology and a greater capital stockPublicad

Agricultural Scientists’ Perceptions of Working with Reporters

Mass media is the main source of scientific information for most Americans, but inaccuracy of reporting has threatened the public’s understanding of science. Perceived media bias and fake news has also made the public skeptical of the media, and scientists’ perceptions are no different. Because scientists are the most trusted source for scientific information in America, it is important they remain willing to work with the media. This study used the Theory of Planned Behavior (TPB) to explore scientists’ perceptions of working with reporters, including their attitude, subjective norms, behavioral control, and intent to engage with the media in the future. In-depth interviews were conducted with 13 tenure-track faculty at the University of Florida’s Institute of Food and Agricultural Sciences (UF/IFAS) in spring 2018. These participants represented low, moderate, and high communicators. The findings from this study indicated mostly negative attitudes toward reporters due to skepticism in their ability to accurately report science. Behavioral control was also limited due to time and ability constraints, but participants recommended trainings as ways to increase behavioral control. Subjective norms were somewhat mixed, with some positive norms from mentors but perceived negative norms from the public. Despite negative attitudes toward reporters, intent to engage with the media was mixed. However, subjective norms and behavioral control were often discussed as reasons to not engage with reporters. The findings from this study offered recommendations for both practice and research to help foster positive relationships between scientists and reporters

Compact, modular and in-plane AOSLO for high-resolution retinal imaging

The adaptive optics scanning laser ophthalmoscope (AOSLO) was first developed in 2002 and since then the technology has been adopted in several laboratories around the world, for both clinical and psychophysical research. There have been a few major design implementations of the AOSLO. The first used on-axis tilted spherical mirrors in a planar arrangement, and the second minimized the build up of astigmatism present in the first design by using a non-planar arrangement. Other designs have avoided astigmatism by using custom-made toroidal mirrors or by using lenses on-axis, rather than mirrors. We present a new design implementation for an AOSLO that maintains a planar optical alignment without the build up astigmatism using compact, reconfigurable modules based on an Offner relay system. We additionally use an off-the-shelf digital oscilloscope for data capture and custom-written Python code for generating and analyzing the retinal images. This design results in a compact system that is simple to align and, being composed of modular relays, has the potential for additional components to be added. We show that this system maintains diffraction-limited image quality across the field of view and that cones are clearly resolved in the central retina. The modular relay design is generally applicable to any system requiring one or more components in the pupil conjugate plane. This is likely to be useful for any point-scanned system, such as a standard scanning laser ophthalmoscope or non-ophthalmic confocal imaging system